Perpendicular magnetization of L10-ordered FePt films in the thinnest limit

S. Imada; A. Yamasaki; S. Suga; T. Shima; K. Takanashi

doi:10.1063/1.2717516

Perpendicular magnetization of L1₀-ordered FePt films in the thinnest limit

S. Imada, A. Yamasaki, S. Suga, T. Shima, K. Takanashi

Collaborative Research Center on Energy Materials

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

Ll₀-ordered FePt ultrathin films with thickness down to subnanometer range were fabricated by alternate monatomic layer (ML) deposition of Fe and Pt on Pt (001) substrate and were capped by Pt. Perpendicular Fe magnetic moment under magnetic field, together with that under remanence, was detected by soft x-ray magnetic circular dichroism. Pt/(Fe 1 ML/Pt 1 ML) ₃/Pt (001), whose FePt layer is ~ 1 nm thick, showed perpendicular remanent magnetization at room temperature. At low temperatures, perpendicular remanent magnetization was found even at the thinnest end, i.e., 1 ML Fe sandwiched by Pt (001).

Original language	English
Article number	132507
Journal	Applied Physics Letters
Volume	90
Issue number	13
DOIs	https://doi.org/10.1063/1.2717516
Publication status	Published - 2007

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2717516

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@article{384ef37fdbc94e3f9bcd111e8a40b12f,

title = "Perpendicular magnetization of L10-ordered FePt films in the thinnest limit",

abstract = "Ll0-ordered FePt ultrathin films with thickness down to subnanometer range were fabricated by alternate monatomic layer (ML) deposition of Fe and Pt on Pt (001) substrate and were capped by Pt. Perpendicular Fe magnetic moment under magnetic field, together with that under remanence, was detected by soft x-ray magnetic circular dichroism. Pt/(Fe 1 ML/Pt 1 ML) 3/Pt (001), whose FePt layer is ~ 1 nm thick, showed perpendicular remanent magnetization at room temperature. At low temperatures, perpendicular remanent magnetization was found even at the thinnest end, i.e., 1 ML Fe sandwiched by Pt (001).",

author = "S. Imada and A. Yamasaki and S. Suga and T. Shima and K. Takanashi",

note = "Funding Information: The authors would like to thank T. Muro and T. Nakamura of SPring-8/JASRI for their developing the XMCD measurement systems and for their support during the measurements. The authors are grateful to Y. Iguchi, T. Watanabe, and Y. Ishida for the assistance in the measurements and the analyses. This work is supported by Grant-in-Aids for COE Research (No. 10CE2004), for 21COE(G18) and for Scientific Research (No. 18360330) from MEXT and JSPS, Japan. Synchrotron radiation experiments at BL25SU, SPring-8 were performed with the approval of JASRI (Nos. 2002B0321, 2003A0673, and 2004A0450).",

year = "2007",

doi = "10.1063/1.2717516",

language = "English",

volume = "90",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

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T1 - Perpendicular magnetization of L10-ordered FePt films in the thinnest limit

AU - Imada, S.

AU - Yamasaki, A.

AU - Suga, S.

AU - Shima, T.

AU - Takanashi, K.

N1 - Funding Information: The authors would like to thank T. Muro and T. Nakamura of SPring-8/JASRI for their developing the XMCD measurement systems and for their support during the measurements. The authors are grateful to Y. Iguchi, T. Watanabe, and Y. Ishida for the assistance in the measurements and the analyses. This work is supported by Grant-in-Aids for COE Research (No. 10CE2004), for 21COE(G18) and for Scientific Research (No. 18360330) from MEXT and JSPS, Japan. Synchrotron radiation experiments at BL25SU, SPring-8 were performed with the approval of JASRI (Nos. 2002B0321, 2003A0673, and 2004A0450).

PY - 2007

Y1 - 2007

N2 - Ll0-ordered FePt ultrathin films with thickness down to subnanometer range were fabricated by alternate monatomic layer (ML) deposition of Fe and Pt on Pt (001) substrate and were capped by Pt. Perpendicular Fe magnetic moment under magnetic field, together with that under remanence, was detected by soft x-ray magnetic circular dichroism. Pt/(Fe 1 ML/Pt 1 ML) 3/Pt (001), whose FePt layer is ~ 1 nm thick, showed perpendicular remanent magnetization at room temperature. At low temperatures, perpendicular remanent magnetization was found even at the thinnest end, i.e., 1 ML Fe sandwiched by Pt (001).

AB - Ll0-ordered FePt ultrathin films with thickness down to subnanometer range were fabricated by alternate monatomic layer (ML) deposition of Fe and Pt on Pt (001) substrate and were capped by Pt. Perpendicular Fe magnetic moment under magnetic field, together with that under remanence, was detected by soft x-ray magnetic circular dichroism. Pt/(Fe 1 ML/Pt 1 ML) 3/Pt (001), whose FePt layer is ~ 1 nm thick, showed perpendicular remanent magnetization at room temperature. At low temperatures, perpendicular remanent magnetization was found even at the thinnest end, i.e., 1 ML Fe sandwiched by Pt (001).

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